Eugene rail



(No Model.)

B. RAU.

- PROCESS OF DYEING.

Patented Dec. 6, 1887.

WITNESSES;

PETERS. mmim mr. Wuhiuxim. n. c

UNITED STATES PATENT OFFICE.

EUGENE RAU, O F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TOdOHN GODDARD WATMOUGH, OF SAME PLACE.

PROCESS OF DYEING.

SPECIFICATION forming part of Letters Patent No. 374,320, dated December 6, 1887.

Application filed December 1, 1886. Serial No. 220,344. (No model.)

To all whom it may concern:

Be it known that I, EUGENE RAU, of the city and county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Methods of Dyeing, of which the following is a specification.

Heretofore aniline and other colors have been dissolvedin hydrocarbonssuch as gasoline, Ste-before being applied to the fabrics.

The object of my invention is to provide a certain new and improved method of dyeing, whereby the colors can be applied to the fabrics mixed with oil.

The invention consists in dissolving the colors in oil, then applying them, and washing out the oil by means of gasoline or benzine, all as will be fully described and set forth hereinafter, and finally pointed out in the claim.

In the accompanying drawing a cross-sectional view of the apparatus which I use in carrying out my process is shown.

The usual water dye colors-such as safranine, methyl-violet, fuchsine, roseine, solid green, phosphine, chrysoidine yellow, and all similar colors-can be used in my improved process.

In a copper kettle having a double bottom for heating it with steam I dissolve in two gallons of water one pound of one of the abovenamed colorsfor instance, solid green-by boiling in the water. When the color is completely dissolved, I add to this solution as much caustic soda as is required for converting the handsome green color into a colorless liquid, seemingly spoiled. I then add about three pounds of oleic acid and let it boil one minute. The handsome colored oil floats on the surface of the solution, which consists of a colorless liquid of no value. The mixture of color and oil obtained in the manner set forth is mixed with olive oil and poured into a vat, A. The fabric to be dyed is passed from the roller (1, over the rollers b, d, and e at the top and bottom of the vat, respectively, then between the pressing-rollers 0 0,which press out the surplus color, the color which runs from the fabric passing through the rollers passing back into the vat. Then the colored fabric is passed around the roller j and secured to a roller, Z, resting loosely onthe roller j, said roller j having its ends mounted in slots in two standards, It. The roller Z is operated by frictional contact from the rollerj, which is operated by a belt from one roller, 6. As the thickness of the layers of fabric increases, the roller Z, resting on the roller j, rises.

According to the shade desired, more or less oliveoil is mixed with the coloring-liquid composed of the oil and color in the manner previously set forth. When the color is'to be very heavy, much oil is used,and when it is to be light less is used. The dyed fabric is removed from the roller Z and placed in drying-rooms heated by steam-pipes up to 120 Fahrenheit. \Vhen the goods are completely dried, they are steamed in a suitable steam-box for the purpose of fixing the colors, which requires about fifteen minutes at apressure of about twenty pounds. After the goods have been dried the remaining oil has to be washed out, which is accomplished by passing the fabric through an apparatus such as shown in the drawings, gasoline or benzine being placed in the vat or box A in place of the coloring-liquid. The gasoline or benzine is evaporated either by subjecting the fabric to heat or exposing it to the action of the air.

I am aware that it is not new to dye fabrics in a solution of dye in alcohol anda fatty or resinous mordant and subsequentlydissolving the said fatty or resinous mordant. I am also aware that it is not new to dye silk fabrics without the use of water or steam by first soaking the same in a bath of benzine with aniline dissolved therein, and afterward soaking the material in a bath of pure benzine.

Having thus described myinvention, I claim as new and desire to secure by Letters Patent- The herein-described method of dyeing fabrics, consisting in dissolving color in water, treating the color dissolved in water with caustic soda and oleic acid, and then adding oil, which mixture is insoluble in water, passing the fabric to be dyed through said mix- In testimony that Iclaim the foregoing as my ture, pressing out the surplus color, then invention I have signed my name in presence drying and steaming the fabric, and then of two subscribing Witnesses.

washing the fabric with hydrocarbons for the EUGENE RAU. 5 purpose of removing the oil and leaving the \Vit-nesses:

color only in the fabric, substantially as set CHAS. M. LUKENS,

forth. ALEX C. KNORR. 

